Analog Measurement Channels; Sensor Inputs For Currents And Voltages - ABB RELION REX640 Technical Manual

Section 3
Basic functions
3.11
3.12
146
• Up to 1024 events are stored. The stored events are visible in HMI and Event
viewer tool in PCM600.
• Recorded data
• Fault records (up to 128)
• Maximum demands
• Circuit breaker condition monitoring
• Latched alarm and trip LEDs' statuses
• Trip circuit lockout
• Counter values

Analog measurement channels

The maximum number of physical analog measurement channels is 20. This can be
achieved with two analog input modules. The protection relay also supports up to 16
SMV channels in four separate 9-2 streams. In addition to the local or 9-2 channels, a
certain number of numerical channels is always calculated from physical
measurements. This number depends on the connection type of the TVTR / TCTR
function block.
Table 72: TVTR/TCTR connection types and numerical channels
Connection type Function block
ULx × 1 ULxTVTR
URES ULxTVTR
ULx × 2 ULxTVTR
ULx × 2 + URES ULxTVTR
ULx × 3 (Delta) ULxTVTR
ULx × 3 (Wye) ULxTVTR
ILx × 3 ILxTCTR
IRES RESxTCTR
ILx × 6 CMSUM
The maximum number of measurement channels is 64. This can be calculated by
adding physical and numerical channels together.

Sensor inputs for currents and voltages

This chapter gives short examples on how to define the correct parameters for sensors.
Sensors have corrections factors, measured and verified by the sensor
manufacturer, to increase the measurement accuracy of primary
values. Correction factors are recommended to be set. Two types of
Physical channels Numerical channels
1 0
1 0
2 4
3 4
3 3
3 4
3 1
1 0
6 4
1MRS759142 C
REX640
Technical Manual